From: "Mark Tsui" <tsui AT netspace DOT net DOT au>
Newsgroups: comp.os.msdos.djgpp
Subject: Input problem
Date: Thu, 29 Oct 1998 21:21:51 +1100
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

This program is a simple guessing game. You type in numbers and it says
whether the number is higher or lower.

When I enter numbers, it is works fine.
The problem is, when I type in a letter instead of a number the program goes
pscho. From what I see on the screen, I think it is just going through my
program without asking for further input.

Can you help me please?

Thanks in advance.

// Guessing Game

#include <stdlib.h>
#include <time.h>
#include <iostream.h>
#include <conio.h>

main()
 {
  int r, guess, tries, playagain;

  clrscr();

  do
   {


    r = (random() & 100);

    cout << "Hello, this is a guessing game enter a number between 0-99:\n";

    for(tries=0; ;tries++)
      {
      cin >> guess;
      if(guess > r) cout << "Too big\n";
      if(guess < r) cout << "Too small\n";

      if(guess == r)
        {
        cout << "Yes you guessed right after "<< tries << "tries.\n";
        break;
        }

      if(tries > 15)
        {
        cout << "You are too dumb, you still can't get it after " << tries
<< " tries.\n";
        cout << "The answer is " << r;
        break;
        }

      }
   cout << "Do you want to play again?\n";
   cin >> playagain;


   } while(playagain);

   cout << "Bye!";

   getch();

   return 0;
}